If you are looking for a good artist grade oil colors in a reasonable price range there are many on the market, one of those are Gamblin artists oil colors.
HOLBEIN EXTRA-FINE ARTIST OILS REVIEW - The Society of Figurative Arts
Gamblin Artist Grade Oil Color 37ml - Portland Grey Medium
GAMBLIN ARTIST GRADE OIL - Fine Line Art and Frame
Gamblin Artist&s Oil Colors Introductory Set
Gamblin Artists Oil Color 37ml Series 6: Cerulean Blue - Wet Paint Artists' Materials and Framing
Gamblin Artist's Oil Paint 37ml Tube - Page 1 of 2 - Sold Singularly
Make Firm Paints Less Firm - Gamblin Solvent Free Gel Review!
Williamsburg Oil Paint Review - The Society of Figurative Arts
Gamblin Safflower Oil - Artist & Craftsman Supply
Oil Paint Review – Ben Williamson
Jackson's : Artist Oil Paint
Gamblin Artist Oil 37Ml Cauc Flesh Tone
Gamblin Artist Paint - Arts & Crafts
Shop Gamblin Artist's Oil Paint - Professional Oil Colors